Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Total Accumulated Other Comprehensive Income (Loss)	$ 5	$ 942
Change	(1,021)	(937)
Total Accumulated Other Comprehensive Income (Loss)	(1,016)	5
Foreign Exchange Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Total Accumulated Other Comprehensive Income (Loss)	54	941
Change	(953)	(887)
Total Accumulated Other Comprehensive Income (Loss)	(899)	54
Unrealized Gain (Loss) on ST Investments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Total Accumulated Other Comprehensive Income (Loss)	(49)	1
Change	(68)	(50)
Total Accumulated Other Comprehensive Income (Loss)	$ (117)	$ (49)